Improvement in boat-detaching apparatus



@anni glatte @anni @attira WILLIAM S. RYERSON AND GEORGE STANOLIFF, OF NEW YORK, N. Y., ASSIGNORS TO THEMSELVES, OLIVER TfMCINTOSH, AMOS OF SAME PLACE.

L. TRIPP, AND CHARLES CHAMBERS,

Letters Patent No. 101,665, llatcll April 5, '1870.

IMPROVEMENT IN BOAT-DETACHING- APPARATUS.

The Schedule referred to in these Letters Patent and making part of the same.

GEORGE STANCLIFF, of the city and State ofl New York, have invented and made an Improvement in Detaching Boats; and the following is declared to be a full,` clear, and exact description of the same.

This invention is an improvement upon that for which Letters'Patent No. 91,488 were granted June 15, 1869. In that patent a hook-ended shaft is shown as applied to an ordinary vfall from the davits, so that the boat is disconnected bythe rotation of the shaft slipping the rings off said' hooked ends. l'

Our invention isvmade for lessening' the distance between the upper block of the fall and the boat by making'the lower block of a sheave revolving upon the tnrningrshait, by which construction the cost of the apparatus is lessened, thejdavts do not requireA to be as long, and there is less risk of any ofthe parts fouling, than in boat-detaohin apparatus heretofore constructed. We also make the horn with a shank passing into a tube, so that the apparatus can be applied with easel to any length-of boat by varying the length of the tube.

In the dlawing- Figure 1 is anv elevation showing the said detaching-apparatus, a portion thereof, however, being in section, and

Figure 2 is a. view of thedetaching-end sectionally of the connecting-tube. v

The horns a a form hocks for the rings b ortheir equivalents, that are attached to the boat, portions of which are shown at c. These horns a are preferred, when made of the shape shown, so as to hold the said rings l) firmly, but cast them off with unerring certainty when said horns are turned with and by their connecting-shafts.

The horns a a are formed with tangs or shanks, c, that pass into the connecting-pipe f, and are there sccured.

We prefer to have the tang held in by at cross-pin at li, so that the parts may be separated for repair; but any other mode of fastening the tang into the -pipe may beemployed, and the tang and pipe may be round or polygonal.

The sheaves g are between the check-pieces le, which form the lower block of the fall, and these are around the shank of the horn between the conical ange thereof and the end of the pipe f, the parts being free, so that the pipe and horn can be turned.

` The eyes k, for the ends of the ropes or chains of the falls, are provided upon the upper part of the block formed by the cheek-pieces h.

I From one side of each of the blocks h, the guardfinger l projects, `so as to prevent the ring b slipping of the horn accidentally'.

The lever-arm m and handle n are provided, for rotating the shaft andhorns, and a pin, o, is passed into an opening in the block l1, s'o as to prevent the lever on and shaft turning, until said pin o is withdrawn.

An offset, t', upon one of the cheek-pieces l1., serves for a stop to the lever fm in one direction, and a second hole should be provided at Ar for the pin o, so that the horns may be held with their upper ends alittle distance from the fingers l, to allow the rings b to he hooked -upon the' horns.

We claim as our-invention- 1. The sheaves g and blocks h, around the Shanks of the horns, in combination with the turning shaft that connects the said horns, substantially as and for the purposes specified.

2^. The horns a of the hoatdetaching apparat-us, made with shanks introduced in a tubular shaft that connects the said hooks, substantially as and for the purposes set forth.

Signed by us this first day of March, A.' D. 1870. 

